Nicktonious
Member since Apr 2023 • Last active Dec 2024Most recent activity
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Board doesn't send pulses with duration less than 1us. As far as I understand that's a deal with prescaling mcu frequency.
Found ur post with examples of how to access a timer, but I feel like it's only about PWM, therefore not not what I need. Can anyone answer is it even possible to change min pulse duration? -
I wanted to turn wifi off on my board to check out how much memory it would release. Unfortunatly I trap into infinite trying to boot. Firstly I get:
>ESP32.enableWifi(false) Erasing saved code. Done! ets Jun 8 2016 00:22:57 rst:0xc (SW_CPU_RESET),boot:0x13 (SPI_FAST_FLASH_BOOT) configsip: 0, SPIWP:0xee clk_drv:0x00,q_drv:0x00,d_drv:0x00,cs0_drv:0x00,hd_drv:0x00,wp_drv:0x00 mode:DIO, clock div:2 load:0x3fff0018,len:4 load:0x3fff001c,len:2984 load:0x40078000,len:10700 load:0x40080400,len:5236 entry 0x40080658 E (562) psram: PSRAM ID read error: 0xffffffff E (562) spiram: SPI RAM enabled but initialization failed. Bailing out. E (562) spiram: SPI RAM not initialized
Then:
Guru Meditation Error: Core 0 panic'ed (LoadProhibited). Exception was unhandled. Core 0 register dump: PC : 0x401c501c PS : 0x00060430 A0 : 0x801b677b A1 : 0x3ffea1b0 A2 : 0x3ffd0568 A3 : 0x3ffea1e0 A4 : 0x00000006 A5 : 0x00000001 A6 : 0x0000002a A7 : 0x3ffea310 A8 : 0x00000000 A9 : 0x3ffea1b0 A10 : 0x00000002 A11 : 0x3ffea1b0 A12 : 0xffffffff A13 : 0x00000000 A14 : 0x0000000a A15 : 0x3ffea2f0 SAR : 0x0000000c EXCCAUSE: 0x0000001c EXCVADDR: 0x00000000 LBEG : 0x40092652 LEND : 0x4009265d LCOUNT : 0x00000000 ELF file SHA256: 0000000000000000 Backtrace: 0x401c5019:0x3ffea1b0 0x401b6778:0x3ffea1e0 0x401c55c5:0x3ffea210 0x401c5756:0x3ffea230 0x401b58f1:0x3ffea270 0x401315b1:0x3ffea290 0x4012f634:0x3ffea2f0 0x4014c621:0x3ffea310 0x4014c8d1:0x3ffea330 0x40121380:0x3ffea390 0x40125e71:0x3ffea3b0 0x40126035:0x3ffea460 0x40133f74:0x3ffea480 Rebooting... ets Jun 8 2016 00:22:57 rst:0xc (SW_CPU_RESET),boot:0x13 (SPI_FAST_FLASH_BOOT) configsip: 0, SPIWP:0xee clk_drv:0x00,q_drv:0x00,d_drv:0x00,cs0_drv:0x00,hd_drv:0x00,wp_drv:0x00 mode:DIO, clock div:2 load:0x3fff0018,len:4 load:0x3fff001c,len:2984 load:0x40078000,len:10700 load:0x40080400,len:5236 entry 0x40080658 E (562) psram: PSRAM ID read error: 0xffffffff E (562) spiram: SPI RAM enabled but initialization failed. Bailing out. E (562) spiram: SPI RAM not initialized
I know that re-flashing helps to "fix" the board but I need t0 find a way to turn wifi off.
I will be much thanksful for your advice. -
@JumJum, hello again. I continued to search for answers, even have found ur 5 year old thread on esp32, where you state that:
- ESP32.enableBLE(false/true) , adds about 1900 additional JsVars
- ESP32.enableWifi/false/true) , adds about 3800 additional JsVars
And I see that lots of people are talking about switching BLE off to get more free memory. But even 2500 jsVars is only ~35Kbytes, meanwhile my board advertises to have around more than 500 KBytes of ram. That's just nonsense!
- ESP32.enableBLE(false/true) , adds about 1900 additional JsVars
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Reference page says that "E.getSizeOf() returns the number of variable blocks used by the supplied variable".
But how should I estimate the real size of entities in my app? For example, E.getSizeOf(Number.MAX_VALUE) returns 1, meanwhile the bocksize is 14 (according to process.memory) and espruino numbers are 64bit. It just makes no sense for me.Sorry for asking kind of stupid question, but I really want to figure out how to calculate size of objects as preciese as possible. Thanks for answer in advance!
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I work with different boards and have certain struggles with STM-based (mine is that one with STM32F411).
I had tried to control WS2812 using digitalPulse, but the experiment has showed that board doesnt perform pulses with duration around (0.3-1us).
Neopixel works great but I dont like that on stm boards it implicitly setups hardware spi bus. I'm wondering if using low-level timer control allows me to avoid using hardware spi (like RMT module on ESP32 does). U see that I do not consider SPI as a solution. Perhaps I would do so if it was possible to configure soft bus baudrate.
Anyway, now it's a question not really about ws2812, but how to make digitalPulse work with impulses I need.